This project was originally published on my blog and my wife's blog. It was also posted on Make:Projects.
Halloween has always been my favorite holiday, but when it comes to dessert, my tastes have matured towards the gourmet. I wanted to create a Halloween treat for adults. Something not to be gobbled, but savored. As a kid, I thought shelled walnuts looked like tiny little brains. This gave me an idea: What if I coated them with candy for Halloween? I envisioned eating handfuls of tiny candy brains…laughing maniacally. That could be fun, but if they were placed in miniature edible skulls, it would really put them over the top. If those skulls were white chocolate… Well, now we’re talking!
I just needed a way to make the skulls. Sculpting each one with modeling chocolate would quickly become tedious, so making some sort of mold seemed like the obvious solution. Besides, modeling chocolate isn’t exactly the best tasting stuff on the planet. Perhaps it would be worthwhile to make them into some sort of crazy truffle. A white chocolate shell with a surprise bittersweet center sounded tasty.
The trouble with skulls is they’re quite complex with lots of nooks and crannies and undercuts. To do a somewhat realistic version would normally require sophisticated (i.e. expensive) multi-part molds. Luckily, I recently learned there are several companies that sell food grade silicone mold materials. The extreme elasticity of silicone made it the perfect choice for this project. I could use a one part mold and still get all the detail I wanted.
I ordered the silicone from MakeYourOwnMolds.com I Plan to try the silicone Plastique in the future, an easy to use 2 part putty, when I have a less ambitious shape to mold. This time, I got the CopyFlex 2-part liquid silicone set with platinum. It’s a bit expensive, costing me around $30 for enough material to cast a 4 skull mold. But the mold is pretty durable and reusable.